3.25" max width is going to look fairly narrow with your height - but if this is what you usually wear and it looks right to you, then by all means go for it. The other consideration is whether the knot will tie up nicely. You can leave this to David though, if he knows your height and the type of knot you usually tie then he will make sure the tie's width in the knot region will be right. I threw up a pic of the four grenadine weaves together a few pages back. A looser weave seems a bit less formal to me, but I think it mainly comes down to what you like the look of.